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公开(公告)号：US20210136728A1
公开(公告)日：2021-05-06
申请号：US16074176
申请日：2017-01-30
Applicant: NTT DOCOMO, INC.
Inventor： Shimpei Yasukawa , Hiroki Harada , Satoshi Nagata , Liu Liu , Qun Zhao , Huiling Jiang
Abstract: There is provided a base station of a radio communication system including a plurality of base stations communicating with the user equipment, the base station including a generator configured to generate a downlink physical shared channel receivable by a plurality of units of user equipment based on a predetermined ID commonly configured in the plurality of base stations; and a transmitter configured to transmit the generated downlink physical shared channel to the units of user equipment with a predetermined subframe.
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公开(公告)号：US20210136669A1
公开(公告)日：2021-05-06
申请号：US17143533
申请日：2021-01-07
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Jing Wang , Liu Liu , Huiling Jiang
Abstract: A base station is disclosed including a receiver that receives an uplink signal in a channel occupancy time initiated by a terminal performing channel listening based on a first listening type and a processor that, when transmitting a downlink signal in the channel occupancy time, performs the channel listening based on a second listening type with which channel access is less difficult than channel access with the first listening type. In other aspects, a terminal and radio communication method for a base station are also disclosed.
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公开(公告)号：US20210127361A1
公开(公告)日：2021-04-29
申请号：US16074152
申请日：2017-01-25
Applicant: NTT DOCOMO, INC.
Inventor： Shimpei Yasukawa , Satoshi Nagata , Qun Zhao , Huiling Jiang , Liu Liu , Anxin Li
Abstract: A user equipment in a wireless communication system that supports D2D communication includes: a selection unit that selects a first control information resource for transmitting control information from a control information resource pool and selects a first data resource for transmitting data from a data transmission resource pool among radio resources in which the control information resource pool and the data transmission resource pool are continuously set without any limitation in a time direction; and a transmission unit that transmits control information including information that designates the first data resource by using the first control information resource and transmits data by using the first data resource.
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公开(公告)号：US20210127341A1
公开(公告)日：2021-04-29
申请号：US16074120
申请日：2017-01-06
Applicant: NTT DOCOMO, INC.
Inventor： Shimpei Yasukawa , Satoshi Nagata , Qun Zhao , Liu Liu , Anxin Li , Huiling Jiang
IPC: H04W56/00 , H04W4/70 , H04W24/10 , H04B17/318
Abstract: There is provided user equipment of a radio communication system that supports D2D communication, the user equipment including a receiver configured to receive a predetermined synchronization signal; a synchronization processor configured to perform a process for synchronizing with the predetermined synchronization signal; and a transmitter configured to transmit a synchronization signal in a subframe that is the same as that of a synchronization signal transmitted from any other user equipment when the synchronization signal transmitted from the other user equipment is received by the receiver and received power of the synchronization signal transmitted from the other user equipment is less than a predetermined threshold value, wherein the transmitter interrupts transmission of the synchronization signal for a predetermined time interval, and the receiver measures the received power of the synchronization signal transmitted from the other user equipment in the predetermined time interval.
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公开(公告)号：US10993261B2
公开(公告)日：2021-04-27
申请号：US16092972
申请日：2017-04-14
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Satoshi Nagata , Liu Liu , Yu Jiang
Abstract: To perform listening for uplink transmission at an appropriate timing, on a carrier with setting of listening. A user terminal according to an aspect of the present invention has a transmission section that transmits a signal on a carrier where a listening is performed prior to uplink transmission, a reception section that receives timing information, and a control section that controls execution timing of the listening, on the basis of the timing information.
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Patent Agency Ranking
公开(公告)号：US20210099979A1
公开(公告)日：2021-04-01
申请号：US16634376
申请日：2017-07-28
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qin Mu , Liu Liu
IPC: H04W72/04
Abstract: To appropriately communicate a control channel even when communication is performed by applying a different control channel configuration from those of legacy LTE systems, one aspect of the terminal includes: a receiving section that receives a downlink control channel; and a processor that determines a number of downlink control channel candidates to be monitored within a slot based on a rule that uses a maximum number of downlink control channel candidates.
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公开(公告)号：US10945248B2
公开(公告)日：2021-03-09
申请号：US15543596
申请日：2016-01-29
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Liu Liu , Huiling Jiang , Qin Mu
IPC: H04L12/801 , H04L5/14 , H04L29/06 , H04L1/00 , H04W72/04 , H04J11/00 , H04W74/08 , H04W76/27 , H04W88/02 , H04W88/08
Abstract: The present invention is designed so that communication can be carried out adequately even when the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth. According to an example of the present invention, a user terminal, in which the bandwidth to use is limited to a partial reduced bandwidth in a system bandwidth, has an acquiring section that acquires EPDCCH (Enhanced PDCCH) configuration information based on information that is reported from a radio base station without using a PDCCH (Physical Downlink Control Channel), and a receiving section that detects a user terminal-specific search space (USS: UE-specific Search Space) of an EPDCCH based on the EPDCCH configuration information.
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公开(公告)号：US10798563B2
公开(公告)日：2020-10-06
申请号：US16312482
申请日：2017-08-10
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Satoshi Nagata , Naoto Ookubo , Qin Mu , Liu Liu , Huiling Jiang
Abstract: The present invention provides a method for configuring a hybrid automatic repeat request (HARQ) mode in a base station, a communication method for use by user terminal supporting communication capabilities of the first type, a base station and user terminal. This user terminal includes a transmission section that transmits information about a capability for supporting HARQ bundling, to a radio base station, and the transmission section transmits bundled HARQ-ACKs to the radio base station based on the capability.
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公开(公告)号：US10779170B2
公开(公告)日：2020-09-15
申请号：US16085188
申请日：2017-03-14
Applicant: NTT DOCOMO, INC.
Inventor： Satoshi Nagata , Qin Mu , Liu Liu , Huiling Jiang
Abstract: The present invention is designed to provide a master information block (MIB) suitable for an NB-IoT communication system. A base station according to an embodiment of the present invention includes a generation section that generates a master information block (MIB) including parameters selected based on an operation mode during narrow band communication, and a transmission section that transmits the MIB.
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公开(公告)号：US20200245270A1
公开(公告)日：2020-07-30
申请号：US16637072
申请日：2017-08-10
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Satoshi Nagata , Jing Wang , Liu Liu
IPC: H04W56/00 , H04W72/04 , H04W24/10 , H04B17/318 , H04W76/27 , H04B17/336
Abstract: A terminal is disclosed including a receiver that measures a first received power in a first resource of a synchronization signal per synchronization signal block index in a cell, and measures a second received power in a second resource; and a processor that derives a measurement result based on a ratio of the first received power to the second received power per the synchronization signal block index. In other aspects, a radio communication method for a terminal is also disclosed.
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